CA1079590A - Boiler for liquid and or gaseous fuels - Google Patents
Boiler for liquid and or gaseous fuelsInfo
- Publication number
- CA1079590A CA1079590A CA283,649A CA283649A CA1079590A CA 1079590 A CA1079590 A CA 1079590A CA 283649 A CA283649 A CA 283649A CA 1079590 A CA1079590 A CA 1079590A
- Authority
- CA
- Canada
- Prior art keywords
- boiler
- combustion chamber
- conduit
- lengths
- fins
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000446 fuel Substances 0.000 title abstract description 4
- 239000007788 liquid Substances 0.000 title abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 9
- 239000003517 fume Substances 0.000 abstract 1
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/30—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections
- F24H1/32—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections with vertical sections arranged side by side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
An improved boiler for liquid and/or gaseous fuels, comprising a combustion chamber and a heat exchanger, wherein said heat exchanger comprises at least one section provided with a finned conduit of a serpentine pattern the axis of which lies in a plane substantially at right angles to the path of the combustion products or fumes and associated fins.
An improved boiler for liquid and/or gaseous fuels, comprising a combustion chamber and a heat exchanger, wherein said heat exchanger comprises at least one section provided with a finned conduit of a serpentine pattern the axis of which lies in a plane substantially at right angles to the path of the combustion products or fumes and associated fins.
Description
~17~ CD
This invention relates to an improved boiler fired by liquid and/ox gaseou~ fuels.
It is an object of the present invention to provide an improved boiler having a novel and unique heat exchanger which, being free of dead and backwater zones, avoids over-heating and the creation o~ steam zones.
It is another object of the present invention to pro-vide a boiler of a limited weight as its entire surface takes part in the heat exchange.
It is still another object of the present invention to provide a boiler wherein a perfectly even rise in water tempera-ture is attained with e-limination of dew points and by which a perfect silent operation is achieved due to the absence of evaporation and this with a substantially reduced overall volume.
It is another significant object of the present invention to provide a component type of boiler, wherein the surface of the combustion chamber is fully independent of the - heat exchanger. -Accordingly, the invention as herein broadly claimed is a boiler which comprises a body providing a combustion cham-ber,and a heat exchanger, the latter including an externally-finned water conduit positioned in a flow path Eor hot gases from the combustion chamber so that, in use of the boiler, water flowing through the conduit is heated by hot gases from the combustion chamber. Furthermore, the conduit is made up of two sexpentine portions through which the water flows successi-vely and which lie in planes that are substantially perpendi-cular to the flow path for successive engagement by the hot ~ gases, lengths of one serpentine portion being opposite spaces between lengths of the other serpentine portion.
Preferably, the lengths o the serpentine portions are externally finned with the fins extending in planes perpen-:, ~
dicular to the lengths and -the fins of one serpentine portion being opposi-te spaces be-tween the ~inS of the other serpentine portion.
The body which provides the combustion chamber may comprise a duct which extends around the chamber and through which, in use of the ~oiler, water is passed to ex-tract heat from the combustion chamber. This duc-t and the conduit are hydraulically connected so that, in use of the boiler, watex flows through the duct and the conduit suc,cessively. Advanta-geously, the bocly which provides the combustion chamber may - comprise fins pro~ecting into the combustion chamber.
In a preferred embodiment, the heat exchanger is made up of two bodies, each comprising an annular ring portion and one of the two serpentine portions in the space enclosed by the ring portion.
A preferred embodiment of the invention will now be described with reference to the appended drawings wherein:
Fig. 1 is a schematic side elevational view showing a - boiler made in accordance with the teachings of the invention;
Fig. 2 is a front view of a water jacke-t element defining the combustion chamber;
Fig. 3 is a sectional view alon line III-III of Fig. 2;
Fig. 4 is a fragmentary sectional view along line IV-IV of Fig. 2;
Fig. 5 is a fragmentary sectional view along line V-V of Fig. 3;
Fig. 6, second sheet of drawings, is a front view showing heat exchanger element, ~ Fig. 7, second sheet of drawings, is a plan view of the element shown in Fig. 6;
Fig. 8 is a sectional view along line VIII-VIII of Fig. 7;
This invention relates to an improved boiler fired by liquid and/ox gaseou~ fuels.
It is an object of the present invention to provide an improved boiler having a novel and unique heat exchanger which, being free of dead and backwater zones, avoids over-heating and the creation o~ steam zones.
It is another object of the present invention to pro-vide a boiler of a limited weight as its entire surface takes part in the heat exchange.
It is still another object of the present invention to provide a boiler wherein a perfectly even rise in water tempera-ture is attained with e-limination of dew points and by which a perfect silent operation is achieved due to the absence of evaporation and this with a substantially reduced overall volume.
It is another significant object of the present invention to provide a component type of boiler, wherein the surface of the combustion chamber is fully independent of the - heat exchanger. -Accordingly, the invention as herein broadly claimed is a boiler which comprises a body providing a combustion cham-ber,and a heat exchanger, the latter including an externally-finned water conduit positioned in a flow path Eor hot gases from the combustion chamber so that, in use of the boiler, water flowing through the conduit is heated by hot gases from the combustion chamber. Furthermore, the conduit is made up of two sexpentine portions through which the water flows successi-vely and which lie in planes that are substantially perpendi-cular to the flow path for successive engagement by the hot ~ gases, lengths of one serpentine portion being opposite spaces between lengths of the other serpentine portion.
Preferably, the lengths o the serpentine portions are externally finned with the fins extending in planes perpen-:, ~
dicular to the lengths and -the fins of one serpentine portion being opposi-te spaces be-tween the ~inS of the other serpentine portion.
The body which provides the combustion chamber may comprise a duct which extends around the chamber and through which, in use of the ~oiler, water is passed to ex-tract heat from the combustion chamber. This duc-t and the conduit are hydraulically connected so that, in use of the boiler, watex flows through the duct and the conduit suc,cessively. Advanta-geously, the bocly which provides the combustion chamber may - comprise fins pro~ecting into the combustion chamber.
In a preferred embodiment, the heat exchanger is made up of two bodies, each comprising an annular ring portion and one of the two serpentine portions in the space enclosed by the ring portion.
A preferred embodiment of the invention will now be described with reference to the appended drawings wherein:
Fig. 1 is a schematic side elevational view showing a - boiler made in accordance with the teachings of the invention;
Fig. 2 is a front view of a water jacke-t element defining the combustion chamber;
Fig. 3 is a sectional view alon line III-III of Fig. 2;
Fig. 4 is a fragmentary sectional view along line IV-IV of Fig. 2;
Fig. 5 is a fragmentary sectional view along line V-V of Fig. 3;
Fig. 6, second sheet of drawings, is a front view showing heat exchanger element, ~ Fig. 7, second sheet of drawings, is a plan view of the element shown in Fig. 6;
Fig. 8 is a sectional view along line VIII-VIII of Fig. 7;
- 2 -- , . . . .
Fig. 9 is a fragmentary sectional view along line IX-IX of Fig. 8;
Fig. 10 is a schematic vertical sectional view showing a gas boiler; and Fig. 11 is a perspective view o~ the heat exchanger for the boiler shown in Fig. 10.
Referring to Figs. 1 through 9, the boiler shown in Fig. 1 comprises a section 1 forming a combustion chamber and made as shown in Figs. 2 through 51 and t~o sections 2, pos-sibly different from each other, forming a heat exchanger andshown in the other figures of the accompanying drawings.
Sections 1 and 2 are located one after the other and joined to one another by means of tie rods ~not shown) and hydraulically connected by connecting sleeves or unions 2A. The arrows show the path for the water to be heated. Reference numeral 3 designates a smoke collecting box discharging smoke to a stack.
Section l is made of cast iron and is of substantially clrcular and annular in shape, having on the inside axially oriented fins 4 and on the outside ears 5 for the passage of tie rods for joining sections 1 and 2, as well as internally threaded connecting unions lA which, together with threaded sleeves, not shown, allow to making of required hydraulic con-nections. Section l is hollowed out to form a water jacket 6.
At a location between the two unions lA, a partition 7 is pro-vided in jacket 6, causing water entering in one union lA to exit from the other~ Section 1 is also provided with sup-porting legs 8.
One of the sections 2, forming the heat exchanger ~ , shown in Figs. 6 through 9, is a cast iron piece shaped ~ substantially as a-clrcular rin~ and its annular wall is "dry", that is, it does not form a wa~er jacket. A coil conduit or serpentlne-9, integral with the ring, extends within the space ~ -~,;, ' , - - ~ 3 ~
"-' defined by the ring and is hydraulically connected to unions 2A
located on opposite sides of a vertical plane through the section. This coil conduit 9 is provided with parallel fins lO
lying in planes norma~ to the coil axis. Also, element 2 is provided with ears 5 and may have supporting legs.
The two sections 2, constituting the heat exchanger, may be identical, but preferably the rear section (Fig. l) has a coil which has four instead of three straight lengths and, looking at the boller from one end, these,~four straight lengths are disposed in the interspaces "A" between the three straight lengths of the coil of the other section 2.
The above described boiler can be fired by liquid or gaseous fuels by means of conventional burners. -~
The gas boiler shown in Figs. 10 and ll operates with atmospheric air burners and incorporates a cast iron heat exchanger made in accordance with the teaching of the present inventive teachings.
In this embodiment, reference numeral 50 designates - a sheet or plate shell, defining the combustion chamber 51, and at the bottom thereof there is provided an atmospheric air gas burner 52 mounted in any known manner (for exa~ple on brackets 53), this burner comprising a tube perforated along its inner Eace.
Shell 50 is of rectangular cross-section and has a double wall 54 defining a series of annular water conduits 55 interconnected by transverse connections 56. The lower water conduit is connected to a tube 57~for connection to a heating system, not shown. The upper ring is also connected to a tube 58 carrying a connector 59, in turn connected to a union 60 of a heat exchanger 61. The heat exchan~er 61 comprises two ~
sup rimposed elements or bodies 62 and 63 bearing against each "
other through end flanges 64.~
,.. ?, f~ :
' ~
~3'7~
Body 62 is of substan-tially rectangular contour match:ing the outlet of combustion chamber 61. It has a second union 65 on the same side as ~mion 60. This union 65 is hydraulically connected through a conventional socket, not shown, to a union 66 of body 61. At the opposite side, body 63 has a union 67 ~or connection to the system.
In this embodiment, body 62 has a coil 68 similar to that of Fig. 6, but having four straight lengths and three con-necting curves, while coil 70 of body 63 coincides with that of Fig. 6. Thus, as above set forth, the straight lengths of one coil are interposed in the spaces of the other coil.
Additionally, fins 72 of body 63 are comb-like interposed between fins 71 of body 62, as shown in Figs. 9 and 10.
A conduit 73 leading to the stack is provided down-stream of the heat exchanger.
' , : . - 5 -, , . , ~
- - . . . .. .. . . ..... ..
Fig. 9 is a fragmentary sectional view along line IX-IX of Fig. 8;
Fig. 10 is a schematic vertical sectional view showing a gas boiler; and Fig. 11 is a perspective view o~ the heat exchanger for the boiler shown in Fig. 10.
Referring to Figs. 1 through 9, the boiler shown in Fig. 1 comprises a section 1 forming a combustion chamber and made as shown in Figs. 2 through 51 and t~o sections 2, pos-sibly different from each other, forming a heat exchanger andshown in the other figures of the accompanying drawings.
Sections 1 and 2 are located one after the other and joined to one another by means of tie rods ~not shown) and hydraulically connected by connecting sleeves or unions 2A. The arrows show the path for the water to be heated. Reference numeral 3 designates a smoke collecting box discharging smoke to a stack.
Section l is made of cast iron and is of substantially clrcular and annular in shape, having on the inside axially oriented fins 4 and on the outside ears 5 for the passage of tie rods for joining sections 1 and 2, as well as internally threaded connecting unions lA which, together with threaded sleeves, not shown, allow to making of required hydraulic con-nections. Section l is hollowed out to form a water jacket 6.
At a location between the two unions lA, a partition 7 is pro-vided in jacket 6, causing water entering in one union lA to exit from the other~ Section 1 is also provided with sup-porting legs 8.
One of the sections 2, forming the heat exchanger ~ , shown in Figs. 6 through 9, is a cast iron piece shaped ~ substantially as a-clrcular rin~ and its annular wall is "dry", that is, it does not form a wa~er jacket. A coil conduit or serpentlne-9, integral with the ring, extends within the space ~ -~,;, ' , - - ~ 3 ~
"-' defined by the ring and is hydraulically connected to unions 2A
located on opposite sides of a vertical plane through the section. This coil conduit 9 is provided with parallel fins lO
lying in planes norma~ to the coil axis. Also, element 2 is provided with ears 5 and may have supporting legs.
The two sections 2, constituting the heat exchanger, may be identical, but preferably the rear section (Fig. l) has a coil which has four instead of three straight lengths and, looking at the boller from one end, these,~four straight lengths are disposed in the interspaces "A" between the three straight lengths of the coil of the other section 2.
The above described boiler can be fired by liquid or gaseous fuels by means of conventional burners. -~
The gas boiler shown in Figs. 10 and ll operates with atmospheric air burners and incorporates a cast iron heat exchanger made in accordance with the teaching of the present inventive teachings.
In this embodiment, reference numeral 50 designates - a sheet or plate shell, defining the combustion chamber 51, and at the bottom thereof there is provided an atmospheric air gas burner 52 mounted in any known manner (for exa~ple on brackets 53), this burner comprising a tube perforated along its inner Eace.
Shell 50 is of rectangular cross-section and has a double wall 54 defining a series of annular water conduits 55 interconnected by transverse connections 56. The lower water conduit is connected to a tube 57~for connection to a heating system, not shown. The upper ring is also connected to a tube 58 carrying a connector 59, in turn connected to a union 60 of a heat exchanger 61. The heat exchan~er 61 comprises two ~
sup rimposed elements or bodies 62 and 63 bearing against each "
other through end flanges 64.~
,.. ?, f~ :
' ~
~3'7~
Body 62 is of substan-tially rectangular contour match:ing the outlet of combustion chamber 61. It has a second union 65 on the same side as ~mion 60. This union 65 is hydraulically connected through a conventional socket, not shown, to a union 66 of body 61. At the opposite side, body 63 has a union 67 ~or connection to the system.
In this embodiment, body 62 has a coil 68 similar to that of Fig. 6, but having four straight lengths and three con-necting curves, while coil 70 of body 63 coincides with that of Fig. 6. Thus, as above set forth, the straight lengths of one coil are interposed in the spaces of the other coil.
Additionally, fins 72 of body 63 are comb-like interposed between fins 71 of body 62, as shown in Figs. 9 and 10.
A conduit 73 leading to the stack is provided down-stream of the heat exchanger.
' , : . - 5 -, , . , ~
- - . . . .. .. . . ..... ..
Claims (7)
1. A boiler comprising a body providing a combustion chamber, and a heat exchanger comprising an externally-finned water conduit positioned in a flow path for hot gases from the combustion chamber so that, in use of the boiler, water flowing through the conduit is heated by hot gases from the combustion chamber, said conduit comprising two serpentine portions through which the water flows successively and which lie in planes substantially perpendicular to said flow path for successive engagement by said hot gases, lengths of one serpentine portion being opposite spaces between lengths of the other serpentine portion.
2. A boiler according to claim 1 wherein said lengths are externally-finned, with the fins extending in planes perpendicular to the lengths, and said fins of one serpentine portion are opposite spaces between said fins of the other serpentine portion.
3. A boiler according to claim 2 in which said body providing the combustion chamber comprises a duct which extends around the chamber and through which, in use of the boiler, water is passed to extract heat from the combustion chamber.
4. A boiler according to claim 3 in which said body is a cast body with an integrally cast duct.
5. A boiler according to claim 3 in which said duct and said conduit are hydraulically connected so, that in use of the boiler, water flows through the duct and the conduit successively.
6. A boiler according to claim 4 in which said body comprises fins which project into the combustion chamber.
7. A boiler according to claims 1, 2 or 5, in which the heat exchanger comprises two bodies, each body comprising an annular ring portion and one of the two serpentine portions in the space enclosed by the ring portion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21402/77A IT1084456B (en) | 1977-03-17 | 1977-03-17 | MODULAR BOILER PERFECTED FOR LIQUID AND GASEOUS FUELS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1079590A true CA1079590A (en) | 1980-06-17 |
Family
ID=11181232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA283,649A Expired CA1079590A (en) | 1977-03-17 | 1977-07-28 | Boiler for liquid and or gaseous fuels |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4158345A (en) |
| AT (1) | ATA581477A (en) |
| BE (1) | BE857151A (en) |
| CA (1) | CA1079590A (en) |
| DE (1) | DE2734014A1 (en) |
| ES (1) | ES464334A1 (en) |
| FR (1) | FR2384211A1 (en) |
| GB (1) | GB1566182A (en) |
| GR (1) | GR61149B (en) |
| IT (1) | IT1084456B (en) |
| NL (1) | NL7708826A (en) |
| YU (1) | YU184477A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100570291B1 (en) * | 2004-10-13 | 2006-04-11 | 주식회사 경동보일러 | Common heat exchanger for boiler / hot water |
| RU180647U1 (en) * | 2017-10-20 | 2018-06-19 | Общество С Ограниченной Ответственностью "Тюменская Энерготепловая Компания" | Hot water boiler |
| US10352585B1 (en) | 2018-02-09 | 2019-07-16 | Theodore S. BROWN | Multi-pass boiler and retrofit method for an existing single-pass boiler |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US462683A (en) * | 1891-11-10 | Sectional water-heater | ||
| US480286A (en) * | 1892-08-09 | Xrateurs | ||
| US3320933A (en) * | 1967-05-23 | Gas fired hot water boiler | ||
| US2151386A (en) * | 1929-04-16 | 1939-03-21 | Texas Co | Furnace |
| US2052856A (en) * | 1933-01-26 | 1936-09-01 | Firm Liesen & Co | Steam generator |
| US2300634A (en) * | 1941-04-26 | 1942-11-03 | Comb Eng Co Inc | Tube coils |
| DE1809073A1 (en) * | 1968-11-15 | 1970-06-11 | Strebelwerk Gmbh | Collective heating boiler |
-
1977
- 1977-03-17 IT IT21402/77A patent/IT1084456B/en active
- 1977-07-26 GB GB31241/77A patent/GB1566182A/en not_active Expired
- 1977-07-26 BE BE179633A patent/BE857151A/en not_active IP Right Cessation
- 1977-07-27 YU YU01844/77A patent/YU184477A/en unknown
- 1977-07-28 DE DE19772734014 patent/DE2734014A1/en not_active Withdrawn
- 1977-07-28 CA CA283,649A patent/CA1079590A/en not_active Expired
- 1977-07-28 US US05/820,041 patent/US4158345A/en not_active Expired - Lifetime
- 1977-07-29 GR GR54065A patent/GR61149B/en unknown
- 1977-07-29 FR FR7724141A patent/FR2384211A1/en active Granted
- 1977-08-09 AT AT581477A patent/ATA581477A/en not_active Application Discontinuation
- 1977-08-10 NL NL7708826A patent/NL7708826A/en not_active Application Discontinuation
- 1977-11-21 ES ES464334A patent/ES464334A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7708826A (en) | 1978-09-19 |
| FR2384211B1 (en) | 1984-05-04 |
| ATA581477A (en) | 1981-03-15 |
| IT1084456B (en) | 1985-05-25 |
| GB1566182A (en) | 1980-04-30 |
| BE857151A (en) | 1977-11-14 |
| GR61149B (en) | 1978-09-27 |
| YU184477A (en) | 1982-05-31 |
| FR2384211A1 (en) | 1978-10-13 |
| US4158345A (en) | 1979-06-19 |
| DE2734014A1 (en) | 1978-09-21 |
| ES464334A1 (en) | 1978-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |
